According to the docs, an image should be displayable in the HTML-preview like so:
.. image:: /path/to/image.jpg
Yet, on VS Code version 1.56.2 on Windows 10 with the reStructuredTest - extension, the HTML-preview doesn't show the real picture, but only placeholders. I tried it with both UNIX- and Windows-like paths:
The code I used is:
...
4) ...
5) .. image:: C:\Users\andreas.luckert\Downloads\Step-Functions-page1.png
6) .. image:: /c/Users/andreas.luckert/Downloads/Step-Functions-page2.png